The U.S. National Science Teachers Association (NSTA), hosting conferences on Science Education since 1952, provides educators from around the world with the latest in science content, teaching strategies, and research to enhance and expand their professional growth. GLOBE has had a strong presence at NSTA since 1995, where GLOBE community members from across the U.S. and Canada have met for years to network and learn from one another.  This year, over 100 GLOBE community members met in Philadelphia, Pennsylvania, on 17 – 20 March 2010.  Major activities included the fifth annual GLOBE North America Regional meeting, the annual GLOBE Community reception, networking at the exhibit hall booths, participation in two National Earth Science Teachers Association (NESTA) Share-a-thons, as well as several presentations made throughout the conference by GLOBE’s ESSP teams, community members and GPO staff.